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Electrode material of catkin super capacitor and preparation method thereof and super capacitor

A technology for supercapacitors and electrode materials, applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of complex graphene preparation process, high requirements, and unfavorable large-scale production, so as to maintain cycle stability, Overcome the effect of poor electrical conductivity and abundant raw material reserves

Active Publication Date: 2015-07-22
HEILONGJIANG HACHUAN CARBON MATERIAL TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, the complex preparation process of graphene and the high requirements for experimental equipment are not conducive to large-scale production

Method used

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Embodiment Construction

[0014] The following examples describe the present invention in more detail.

[0015] According to the mass ratio of 1:1~2, mix 5g catkins with potassium hydroxide, grind them into powder and put them into a tube furnace. -2h, then increase the temperature to 850°C at 10°C / min for 1-2h, then cool naturally to obtain porous carbonized catkins.

[0016] According to the mass ratio of carbonized catkins and thiourea of ​​1:3~4, add 0.1g of porous carbonized catkins into the thiourea solution, stir vigorously for 0.5-1h, then heat at 80-90°C to evaporate the water to dryness; The material was sent into a tube furnace, and under the protection of argon, the temperature was raised to 800°C at a rate of 10°C / min, continued heating for 2-3 hours, and then cooled naturally to obtain nitrogen and sulfur doped carbonized catkin electrode materials.

[0017] Nitrogen-sulfur-doped carbonized catkins were used as the working electrode, the counter electrode was a platinum electrode, and a ...

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Abstract

The invention provides an electrode material of a catkin super capacitor and a preparation method thereof and the super capacitor. The preparation method includes: firstly, blending catkin and potassium hydroxide and increasing the temperature to 400 DEG C at a heating rate of 5 DEG C per minute, and keeping 400 DEG C for one or two hours; secondly, increasing the temperature to 850 DEG C at a heating rate of 10 DEG C per minute and keeping 850 DEG C for one or 2 hours; thirdly, obtaining porous carbide catkin electrode material; adding the porous carbide catkin to thiourea solution, intensively stirring for half an hour to one hour, then heating to evaporate moisture at the temperature between 80 DEG C and 90 DEG C; heating the obtained material to 800 DEG C at a heating rate of 10 DEG C per minute under the protection of argon, continuing heating for 2 to 3 hours, and then allowing natural cooling to obtain carbide catkin electrode material with nitrogen and sulphur. A novel carbon nano-sheet material with bigger surface area, a plurality of absorption activity points, two-dimensional cellular and simplicity of preparation is prepared. The electrode prepared with the novel carbon nano-sheet material has excellent capacitance performance.

Description

technical field [0001] The invention relates to a supercapacitor electrode material. The invention also relates to a preparation method of a supercapacitor electrode material. Background technique [0002] A supercapacitor is an energy storage device that not only uses an electric double layer capacitor to store energy, but also uses the redox reaction on the electrode / solution surface to store energy. It is also called an electrochemical capacitor or a pseudocapacitor. Supercapacitors have the advantages of fast charging and discharging with large currents, many cycles, low temperature operation, very few maintenance times, and a certain memory effect. According to different energy storage mechanisms, supercapacitors can be divided into electric double-layer capacitors, Faraday quasi-capacitors and hybrid capacitors. Supercapacitors are developing towards high specific power and high specific energy. Hybrid supercapacitors with transition metal oxides and porous carbon as...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/86
CPCY02E60/13H01G11/30H01G11/86
Inventor 王贵领李一举陈曦张栋铭曹殿学徐盼盼
Owner HEILONGJIANG HACHUAN CARBON MATERIAL TECH CO LTD
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